Scientific Reports

Table 15 Carbon price characteristics in order of importance.

From: Carbon price prediction based on decomposition technique and extreme gradient boosting optimized by the grey wolf optimizer algorithm

Guangdong				Hubei				Fujian
XGBOOST		GBDT		XGBOOST		GBDT		XGBOOST		GBDT
Features	Score	Features	Score	Features	Score	Features	Score	Features	Score	Features	Score
xi-1	0.302	xi-1	0.291	xi-1	0.246	xi-1	0.211	xi-2	0.192	xi-1	0.239
xi-5	0.136	xi-5	0.173	xi-3	0.187	xi-3	0.118	xi-1	0.189	xi-3	0.132
xi-2	0.134	xi-2	0.170	AQI	0.115	xi-5	0.111	EUA	0.112	DQS	0.091
TRQ	0.093	xi-7	0.055	BP500	0.081	TRQ	0.109	AQI	0.090	BP500	0.083
xi-7	0.066	EUA	0.055	TRQ	0.078	CSI300	0.097	xi-3	0.089	EUA	0.076
HBH	0.059	BP500	0.047	CFD	0.076	EUA	0.096	TRQ	0.072	SHZQ	0.073
DQS	0.044	DQS	0.044	xi-5	0.075	CFD	0.066	HBH	0.067	xi-2	0.068
BP500	0.041	TRQ	0.039	DQS	0.062	HBH	0.052	SHZQ	0.056	CFD	0.065
CSI300	0.040	HBH	0.033	HBH	0.031	DQS	0.050	CFD	0.056	HBH	0.064
SHZQ	0.038	AQI	0.032	EUA	0.025	AQI	0.050	BP500	0.044	TRQ	0.057
EUA	0.023	CSI300	0.031	CSI300	0.023	BP500	0.039	DQS	0.035	AQI	0.053
AQI	0.021	SHZQ	0.030

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